Unilever has recalled six brands of dry shampoo made before October 2021 because of potentially elevated levels of benzene, which is a carcinogen. The brands of aerosol dry shampoo are Dove, Nexxus, Suave, TIGI (Rockaholic and Bed Head), and TRESemmé. According to an announcement from the U.S. Food and Drug Administration, the benzene is not in the products but is produced by the propellant. “Benzene is classified as a human carcinogen. Exposure to benzene can occur by inhalation, orally, and through the skin and it can result in cancers including leukemia and blood cancer of the bone marrow and blood...